Water conservancy cofferdam construction device
By using extruded plates and round rod structures in the cofferdam construction device, extruded gravel and gravel come into contact with the sheet pile, the water leakage problem caused by the sheet pile gap is solved, the waterproofness and stability of the cofferdam are improved, and the plate is prevented from being covered by the sheet pile. The piles are tilted and gravel is rushed out.
Patent Information
- Application Number
- CN202411640924.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2024-12-20
AI Technical Summary
In cofferdam construction, the gap between the sheet piles causes water leakage, which poses a risk of engineering accidents, and the existing technology is difficult to effectively solve.
A water conservancy cofferdam construction device was designed, and by setting up a reinforced structure, including extruded plates, semicircular rods and whole round rods, the extruded gravel and gravel moved to the position of the sheet piles, and the sealing properties were enhanced by connecting plates and arc plates. and stability to prevent rainwater and sludge from entering.
It effectively improves the waterproofness and overall strength of the sheet piles, prevents the sheet piles from tilting and leaking, enhances the stability and sealing of the cofferdam, and prevents gravel and gravel from being washed out.
Smart Images
Figure CN119163045A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of cofferdams, in particular to a water conservancy cofferdam construction device. Background Art
[0002] A cofferdam is a temporary retaining structure built in the construction of permanent water conservancy facilities during water conservancy project construction. Its function is to prevent water and soil from entering the construction site of the building so that drainage can be done in the cofferdam, foundation pits can be excavated, and buildings can be built. It is generally used in hydraulic structures. Except as part of a formal building, the cofferdam is generally dismantled after use. Cofferdams mainly include earth-rock cofferdams, steel sheet pile cofferdams, concrete cofferdams, and wooden cage cofferdams. Among them, steel sheet pile cofferdams are the most commonly used sheet pile cofferdams. Steel sheet piles are a type of steel with a lock. Their cross-sections include straight plate, groove, and Z-shaped. They can be formed into cofferdams of various shapes as needed and can be reused many times. Therefore, they have a wide range of uses. In bridge construction, they are often used for cofferdams on the top of caissons, cofferdams for pipe column foundations, pile foundations, and open-cut foundations.
[0003] When building a cofferdam, positioning piles are driven in different positions according to needs, and then sheet piles are added between adjacent positioning piles. Adjacent sheet piles will fit together, and when the sheet piles are formed into a rectangle, a cofferdam is formed. If there are gaps between the sheet piles that fit together, water leakage will occur, which may lead to engineering accidents. Summary of the invention
[0004] In order to make up for the shortcomings of the prior art and solve the above technical problems, the present invention proposes a hydraulic cofferdam construction device, which can squeeze gravel and crushed stone to move to the sheet pile position and squeeze the sheet pile by setting a reinforcement structure, so that the gravel and crushed stone can better contact with the sheet pile, and at the same time improve the waterproofness of the sheet pile. The specific structure is as follows; A hydraulic cofferdam construction device comprises a cofferdam structure; the cofferdam structure comprises four positioning piles, and the cross section of the positioning piles is L-shaped; the four positioning piles form a rectangle; Evenly arranged fixing piles are inserted between the two positioning piles on the same side, and the fixing piles are steel pipes; cylindrical grooves are opened in the inner walls of the positioning piles on the side facing the fixing piles, and the cylindrical grooves are parallel to the fixing piles; Two L-shaped clamping plates are fixedly connected to the two side surfaces of each of the fixing piles facing the two side positioning piles, and the L-shaped clamping plates located on both sides of the positioning piles are mirror-imaged; The four positioning piles are also fixedly connected with an L-shaped clamping plate on one side of the surface facing the fixed pile; Two sheet piles are arranged between each of the two adjacent fixed piles, and the sheet piles are V-shaped; the sheet piles are inserted into the L-shaped cardboard on each of the two adjacent fixed piles; Two sheet piles are also arranged between the positioning pile and the adjacent fixing pile, and the sheet piles are inserted into the L-shaped cardboard of the positioning pile and the fixing pile; during construction, gravel and crushed stone need to be filled between the two sheet piles to fill the gap between the two sheet piles; A reinforcement structure is provided between each of two adjacent fixed piles; a reinforcement structure is also provided between the positioning pile and the fixed pile, and the reinforcement structure is used to enhance the sealing and stability of the cofferdam structure.
[0005] Preferably, the reinforcement structure comprises an extruded plate; the extruded plate is located between two sheet piles; A connecting plate is fixedly connected to the top of each extruded plate, and the length of the connecting plate is greater than the length of the extruded plate and fits the upper surface of the sheet pile; The connecting plate extends to the top of the fixed pile, and the connecting plate located above the positioning pile extends to the top of the cylindrical groove; The connecting plate extends to both sides of the top of the fixed pile and is fixedly connected with semicircular rods, and there is a spacing between the semicircular rods and the extrusion plate; The semi-circular rods are all inserted into the fixed piles; the semi-circular rods on the adjacent reinforcement structures are inserted into one fixed pile together to form a whole round rod; A full round rod is fixedly connected to one side of the connecting plate extending to the top of the cylindrical groove, and the full round rod is inserted into the cylindrical groove.
[0006] Preferably, two arc-shaped plates are fixedly connected to both side end surfaces of the connecting plate close to the two sheet piles, and the arc-shaped plates are both in contact with adjacent fixing piles or positioning piles.
[0007] The bottoms of the extruded plate and the curved plate are both designed with chamfered angles, so that the extruded plate and the curved plate can be inserted between two sheet piles more easily.
[0008] Preferably, the heights of the full-circle rod and the semi-circle rod are both higher than the heights of the positioning pile and the fixing pile; The semicircular rod and the full round rod are both provided with a first through groove on one side above the positioning pile and the fixing pile; a connecting rod is inserted into the first through groove of the semicircular rod and the full round rod on the same side, so that the semicircular rod and the full round rod on the same side can be connected into a whole.
[0009] Preferably, each of the positioning piles is provided with a hydraulic cylinder; The extension rod of each hydraulic cylinder extends to the top of the positioning pile and is fixedly connected with an L-shaped block; each L-shaped block is provided with a second through groove on both side end surfaces facing the two connecting rods, and the second through groove runs through the L-shaped block design; The connecting rods close to the second through grooves all extend into the second through grooves. Since the four connecting rods are connected by four L-shaped blocks, the four connecting rods can be formed into a whole. When the connecting rods are inserted, the connecting rods are first passed through the second through grooves on the L-shaped blocks, and then passed through the first through grooves in turn, so that finally the two sides of the connecting rods are located in the second through grooves of different L-shaped blocks.
[0010] Preferably, a slide rail is fixedly connected to the surface of the fixed piles on one side of the cofferdam structure; Slide blocks are slidably connected in the slide rails; L-shaped plates are fixedly connected to the slide blocks, and adjacent L-shaped plates are fitted to each other.
[0011] Preferably, baffles are fixedly connected to both sides of the L-shaped plate.
[0012] Preferably, the sliding block extends to the top position of the fixed pile.
[0013] The beneficial effects of the present invention are as follows: 1. A hydraulic cofferdam construction device described in the present invention can squeeze gravel and crushed stone to move toward the sheet pile position and squeeze the sheet pile by inserting a pressure plate between two sheet piles, so that the gravel and crushed stone can better contact with the sheet pile, while improving the waterproofness of the sheet pile. At the same time, the squeezed gravel and crushed stone and the squeezed sheet pile, when the sheet pile is squeezed, will better fit with the L-shaped card plate, further improving the waterproofness of the sheet pile. At the same time, after the semi-circular rod and the full-circular rod are respectively inserted into the fixed pile and the columnar groove, the strength of the fixed pile and the positioning pile can be further enhanced. At the same time, the top of the sheet pile is shielded by the connecting plate to prevent rainwater from dripping into the gravel and crushed stone between the two sheet piles, thereby flushing out the gravel and crushed stone.
[0014] 2. The hydraulic cofferdam construction device described in the present invention, since the semicircular rods and the full-circular rods on the same side are connected by a connecting rod, the semicircular rods and the full-circular rods on the same side can be connected into a whole, so that the fixed piles and the sheet piles engaged on the fixed piles can be limited, thereby enhancing the overall strength of the cofferdam. If one of the sheet piles has a tendency to tilt due to water pressure, the connecting rod will limit the reinforcing structure on the adjacent side, and the reinforcing structure will limit the fixed piles and the sheet piles, thereby preventing one of the sheet piles from tilting when under pressure, thereby avoiding water leakage after the sheet piles are tilted.
[0015] 3. The hydraulic cofferdam construction device described in the present invention has four connecting rods connected by four L-shaped blocks, so that the four connecting rods can be formed into a whole, thereby further enhancing the overall strength of the cofferdam, and at the same time, the four hydraulic cylinders can be controlled to contract, thereby driving the four L-shaped blocks to move downward, and the downward moving L-shaped blocks will drive the connecting rods to move downward, and the downward moving connecting rods will squeeze the semicircular rods and the full-circular rods downward. When the semicircular rods and the full-circular rods move downward, they will drive the connecting blocks to squeeze the sheet piles downward, so that the top of the sheet piles can be pressed and fixed again by the connecting plates, thereby further improving the stability of the sheet piles. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] Figure 1 is a three-dimensional diagram of the cofferdam structure of the present invention; Figure 2 It is a structural diagram of one side of the cofferdam structure of the present invention; Figure 3 It is an exploded view of positioning piles, fixing piles, sheet piles and reinforcement structures in the cofferdam structure of the present invention; Figure 4 is a structural diagram of the reinforcement structure of the present invention; Figure 5 is a front view of the cofferdam structure of the present invention; Figure 6 The present invention Figure 5 Sectional view at AA; Figure 7 The present invention Figure 6 A partial enlarged view of point B in the middle.
[0018] In the figure: 1. Positioning pile; 11. Column groove; 12. Fixed pile; 13. L-shaped pallet; 14. Sheet pile; 2. Extrusion plate; 21. Connecting plate; 22. Semicircular rod; 23. Full-circular rod; 24. Arc plate; 25. First through groove; 26. Connecting rod; 27. Hydraulic cylinder; 28. L-shaped block; 29. Second through groove; 3. Slide rail; 31. Sliding block; 32. L-shaped plate; 33. Baffle. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Example
[0020] like Figures 1 to 7 As shown, a hydraulic cofferdam construction device according to the present invention comprises a cofferdam structure; the cofferdam structure comprises four positioning piles 1, and the cross section of the positioning piles 1 is L-shaped; the four positioning piles 1 form a rectangle; Evenly arranged fixing piles 12 are inserted between the two positioning piles 1 on the same side, and the fixing piles 12 are steel pipes; a cylindrical groove 11 is opened in the inner wall of the positioning pile 1 on the side facing the fixing pile 12, and the cylindrical groove 11 and the fixing pile 12 are parallel to each other; Each of the fixed piles 12 is fixedly connected to two L-shaped clamping plates 13 on both sides of the positioning piles 1, and the L-shaped clamping plates 13 on both sides of the positioning piles 1 are mirror-imaged; The four positioning piles 1 are also fixedly connected with an L-shaped clamping plate 13 on one side of the surface facing the fixed pile 12; Two sheet piles 14 are provided between each of the two adjacent fixing piles 12, and the sheet piles 14 are V-shaped; the sheet piles 14 are inserted into the L-shaped clamping plates 13 on each of the two adjacent fixing piles 12; Two sheet piles 14 are also arranged between the positioning pile 1 and the adjacent fixing pile 12, and the sheet piles 14 are inserted into the L-shaped clamping plate 13 of the positioning pile 1 and the fixing pile 12; during construction, gravel and crushed stone need to be filled between the two sheet piles 14 to fill the gap between the two sheet piles 14; A reinforcement structure is provided between two adjacent fixed piles 12; a reinforcement structure is also provided between the positioning pile 1 and the fixed pile 12, and the reinforcement structure is used to enhance the sealing and stability of the cofferdam structure; In this embodiment, the reinforcement structure comprises an extruded plate 2; the extruded plate 2 is located between two sheet piles 14; A connecting plate 21 is fixedly connected to the top of each extruded plate 2, and the length of the connecting plate 21 is greater than the length of the extruded plate 2, and is in contact with the upper surface of the sheet pile 14; The connecting plate 21 extends to the top of the fixing pile 12, and the connecting plate 21 located above the positioning pile 1 extends to the top of the cylindrical groove 11; The connecting plate 21 extends to both sides of the top of the fixing pile 12 and is fixedly connected with a semicircular rod 22, and there is a distance between the semicircular rod 22 and the extrusion plate 2; The semi-circular rods 22 are all inserted into the fixed piles 12; the semi-circular rods 22 on the adjacent reinforcement structures are inserted into one fixed pile 12 together to form a whole round rod; The connecting plate 21 extends to one side of the top of the cylindrical slot 11 and is fixedly connected with a round rod 23, and the round rod 23 is inserted into the cylindrical slot 11; Specifically, when constructing a cofferdam, firstly, four positioning piles 1 are inserted into the riverbed by a pile hammer according to the construction requirements, and then the fixed piles 12 are inserted between the two positioning piles 1 on the same side at the same distance, and the fixed piles 12 are inserted into the riverbed. When all the positioning piles 1 and the fixed piles 12 are inserted, the positioning piles 1 and the fixed piles 12 form a rectangle, and then the sheet piles 14 are inserted into the L-shaped cardboards 13 on the two adjacent fixed piles 12 in turn, and two L-shaped cardboards 13 can be inserted between the two adjacent fixed piles 12. When the sheet pile 14 is inserted into the L-shaped pallet 13, the sheet pile 14 will move down along the L-shaped pallet 13 until it is inserted into the riverbed. At the same time, the sheet pile 14 is also inserted on the side opposite to the positioning pile 1 and the fixed pile 12. When all the sheet piles 14 are inserted, a cofferdam of double-layer sheet piles 14 will be formed. Then, gravel and crushed stone will be filled between the two opposite sheet piles 14. After the gravel and crushed stone are filled, the strength and waterproofness of the sheet pile 14 can be enhanced, and then a reinforcement structure can be inserted into the sheet pile 14; More specifically, when inserting the reinforcement structure, the reinforcement structure is first inserted between two adjacent fixed piles 12. When inserting, the reinforcement structure is first transferred to the position above the fixed piles 12, and the two semicircular rods 22 fixedly connected to the connecting plate 21 are aligned with the two fixed piles 12 below. At this time, the extrusion plate 2 is just located between the two sheet piles 14. Then, the two semicircular rods 22 are inserted into the two fixed piles 12 below. At this time, the extrusion plate 2 is located between the two fixed piles 12 and fits with the fixed piles 12. Then, the pile driver is used to gradually push the reinforcement structure downward, thereby driving the two semicircular rods 22 to gradually move downward in the fixed piles 12, and at the same time, pushing the extrusion plate 2 to gradually move downward between the two sheet piles 14. In the process of the extrusion plate 2 gradually moving downward, the gravel and crushed stone between the two sheet piles 14 are squeezed, so that the gravel and crushed stone are moved to the sheet pile 14 position The sheet pile 14 is moved and squeezed. When the gravel and crushed stone move toward the sheet pile 14, the gravel and crushed stone will be squeezed against each other, so that the gravel and crushed stone can be further compacted and the gravel and crushed stone can be better contacted with the sheet pile 14, thereby improving the waterproofness of the sheet pile 14. At the same time, the squeezed gravel and crushed stone and the squeezed sheet pile 14 will better fit with the L-shaped card board 13 after the sheet pile 14 is squeezed, thereby further improving the waterproofness of the sheet pile 14. When the semicircular rod 22 and the pressure plate are inserted into the riverbed, the bottom of the connecting plate 21 will fit with the top of the sheet pile 14, so that the top of the sheet pile 14 can be shielded, and then the reinforcing structure between the positioning pile 1 and the fixed pile 12 can be inserted. Since the connecting plate 21 extends to one side of the top of the cylindrical groove 11 and is fixedly connected to the full-round rod 23, when inserting, the full-round rod 23 can be inserted into the cylindrical groove 11; Further, after the reinforcing structure is inserted, each fixed pile 12 has two semicircular rods 22 that fit each other and are filled in the fixed pile 12, and then the water in the cofferdam is pumped out. After the water in the cofferdam is pumped out, construction can be carried out in the cofferdam; By inserting the pressure plate between the two sheet piles 14, the gravel and crushed stone can be squeezed to move toward the sheet pile 14 and squeeze the sheet pile 14, so that the gravel and crushed stone can better contact with the sheet pile 14, while improving the waterproofness of the sheet pile 14. At the same time, the squeezed gravel and crushed stone and the squeezed sheet pile 14, when the sheet pile 14 is squeezed, will better fit with the L-shaped card board 13, further improving the waterproofness of the sheet pile 14. At the same time, after the semi-circular rod 22 and the full-circular rod 23 are respectively inserted into the fixed pile 12 and the columnar groove 11, the strength of the fixed pile 12 and the positioning pile 1 can be further enhanced. At the same time, the top of the sheet pile 14 is shielded by the connecting plate 21 to prevent rainwater from dripping into the gravel and crushed stone between the two sheet piles 14, thereby flushing out the gravel and crushed stone. Example
[0021] The two side end surfaces of the connecting plate 21 close to the two sheet piles 14 are fixedly connected with two arc-shaped plates 24, and the arc-shaped plates 24 are both in contact with the adjacent fixed piles 12 or positioning piles 1; The bottoms of the extruded plate 2 and the curved plate 24 are both designed with chamfered angles, so that the extruded plate 2 and the curved plate 24 can be more easily inserted between the two sheet piles 14; In this embodiment, the heights of the full-circle rod 23 and the semi-circle rod 22 are both higher than the heights of the positioning pile 1 and the fixing pile 12; The semicircular rod 22 and the full-circular rod 23 are both provided with a first through groove 25 on one side above the positioning pile 1 and the fixing pile 12; a connecting rod 26 is inserted into the first through groove 25 of the semicircular rod 22 and the full-circular rod 23 on the same side, so that the semicircular rod 22 and the full-circular rod 23 on the same side can be connected into a whole; In this embodiment, each of the positioning piles 1 is provided with a hydraulic cylinder 27; The extension rod of each hydraulic cylinder 27 extends to the top of the positioning pile 1 and is fixedly connected with an L-shaped block 28; each L-shaped block 28 is provided with a second through groove 29 on both side end surfaces facing the two connecting rods 26, and the second through groove 29 penetrates the L-shaped block 28; The connecting rods 26 near the second through slots 29 all extend into the second through slots 29. Since the four connecting rods 26 are connected by four L-shaped blocks 28, the four connecting rods 26 can be formed into a whole. When the connecting rods 26 are inserted, the connecting rods 26 are first passed through the second through slots 29 on the L-shaped blocks 28, and then passed through the first through slots 25 in sequence, so that the two sides of the connecting rods 26 are finally located in the second through slots 29 of different L-shaped blocks 28. Specifically, since the bottoms of the extruded plate 2 and the curved plate 24 are both designed with chamfered angles, when the extruded plate 2 and the curved plate 24 are inserted between the two sheet piles 14, they can be inserted more easily into the gravel and crushed stone due to the existence of the bevel, and the bevel will gradually squeeze the gravel and crushed stone, so that the gravel and crushed stone gradually approach the sheet pile 14. At the same time, after the curved plate 24 is inserted between the two sheet piles 14, the curved plate 24 can further squeeze the position where the sheet pile 14 is engaged, thereby further improving the waterproofness of the engagement position of the sheet pile 14; More specifically, since the semicircular rod 22 and the full-circular rod 23 on the same side are connected by a connecting rod 26, the semicircular rod 22 and the full-circular rod 23 on the same side can be connected into a whole, so that the fixed piles 12 and the sheet piles 14 engaged on the fixed piles 12 can be limited, so that the overall strength of the cofferdam can be enhanced. If one of the sheet piles 14 has a tendency to tilt due to water pressure, the connecting rod 26 will limit the reinforcing structure on the adjacent side, and the reinforcing structure will limit the fixed piles 12 and the sheet piles 14, so that one of the sheet piles 14 can be prevented from tilting when it is under pressure, thereby avoiding water leakage after the sheet pile 14 tilts. Furthermore, since the four connecting rods 26 are connected by four L-shaped blocks 28, the four connecting rods 26 can be formed into a whole, thereby further enhancing the overall strength of the cofferdam. At the same time, the four hydraulic cylinders 27 can be controlled to contract, thereby driving the four L-shaped blocks 28 to move downward, and the downwardly moved L-shaped blocks 28 will drive the connecting rods 26 to move downward, and the downwardly moved connecting rods 26 will squeeze the semicircular rods 22 and the full-circular rods 23 downward. When the semicircular rods 22 and the full-circular rods 23 move downward, they will drive the connecting blocks to squeeze the sheet piles 14 downward, so that the top of the sheet piles 14 can be pressed and fixed again by the connecting plates 21, thereby further improving the stability of the sheet piles 14. Example
[0022] The surfaces of the fixed piles 12 on one side of the cofferdam structure are fixedly connected with the slide rails 3; Slide blocks 31 are slidably connected in the slide rails 3; L-shaped plates 32 are fixedly connected to the slide blocks 31, and adjacent L-shaped plates 32 are attached to each other; In this embodiment, baffles 33 are fixedly connected to both sides of the L-shaped plate 32; In this embodiment, the slider 31 extends to the top of the fixing pile 12; Specifically, when the cofferdam is built, the slider 31 is slid into the slide rail 3, and the slider 31 drives the L-shaped plate 32 to move downward. When the L-shaped plate 32 moves down to the bottom of the water, the L-shaped plate 32 will contact the bottom of the water. At this time, the direction of the L-shaped plate 32 is opposite to the direction of the water flow. When the sludge in the river flows to the cofferdam position with the water, the sludge will accumulate on the L-shaped plate 32. In this process, the sludge can be pressed on the L-shaped plate 32 to prevent the sludge from directly acting on the cofferdam, thereby impacting the cofferdam. More specifically, since baffles 33 are fixedly connected to both sides of the L-shaped plate 32, sludge will accumulate between the two baffles 33. As the sludge on the L-shaped plate 32 gradually increases, the slider 31 can be pulled upward, and the slider 31 will drive the L-shaped plate 32 to move upward. The upward L-shaped plate 32 will drive the accumulated sludge to move upward. When the sludge follows the L-shaped plate 32 to move up to the water surface, the sludge can be collected to avoid excessive accumulation of sludge, so that the sludge acts on the cofferdam, thereby directly impacting the cofferdam.
[0023] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0024] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A hydraulic cofferdam construction device, comprising a cofferdam structure; characterized in that: The cofferdam structure comprises four positioning piles (1), and the cross section of the positioning piles (1) is L-shaped; the four positioning piles (1) form a rectangle; Evenly arranged fixing piles (12) are inserted between the positioning piles (1) located on the same side and facing each other, and the fixing piles (12) are steel pipes; a columnar groove (11) is provided in the inner wall of the positioning pile (1) facing the fixing pile (12), and the columnar groove (11) and the fixing pile (12) are parallel to each other; Two L-shaped clamping plates (13) are fixedly connected to the two side surfaces of each of the fixing piles (1) facing the two side positioning piles (1), and the L-shaped clamping plates (13) located on the two sides of the positioning piles (1) are mirror-imaged; The four positioning piles (1) are also fixedly connected with an L-shaped clamping plate (13) on one side of the surface facing the fixed pile (12); Two sheet piles (14) are arranged between each of the two adjacent fixing piles (12), and the sheet piles (14) are V-shaped; the sheet piles (14) are inserted into the L-shaped clamping plates (13) on each of the two adjacent fixing piles (12); Two sheet piles (14) are also arranged between the positioning pile (1) and the adjacent fixing pile (12), and the sheet piles (14) are inserted into the L-shaped clamping plate (13) of the positioning pile (1) and the fixing pile (12); during construction, gravel and crushed stone need to be filled between the two sheet piles (14) to fill the gap between the two sheet piles (14); A reinforcement structure is provided between two adjacent fixed piles (12); a reinforcement structure is also provided between the positioning pile (1) and the fixed pile (12), and the reinforcement structure is used to enhance the sealing and stability of the cofferdam structure.
2. A hydraulic cofferdam construction device according to claim 1, characterized in that: The reinforcement structure comprises an extruded plate (2); the extruded plate (2) is located between two sheet piles (14); A connecting plate (21) is fixedly connected to the top of each extruded plate (2), and the length of the connecting plate (21) is greater than the length of the extruded plate (2) and is in contact with the upper surface of the sheet pile (14); The connecting plate (21) extends to the top of the fixing pile (12), and the connecting plate (21) located above the positioning pile (1) extends to the top of the cylindrical groove (11); The connecting plate (21) extends to both sides of the top of the fixing pile (12) and is fixedly connected with a semicircular rod (22), and there is a distance between the semicircular rod (22) and the extrusion plate (2); The semi-circular rods (22) are all inserted into the fixed piles (12); the semi-circular rods (22) on the adjacent reinforcing structures are inserted into one fixed pile (12) together to form a whole round rod; The connecting plate (21) extends to one side of the top of the cylindrical groove (11) and is fixedly connected to a full round rod (23), and the full round rod (23) is inserted into the cylindrical groove (11).
3. A hydraulic cofferdam construction device according to claim 2, characterized in that: The two side end surfaces of the connecting plate (21) close to the two sheet piles (14) are fixedly connected with two arc-shaped plates (24), and the arc-shaped plates (24) are both in contact with the adjacent fixed piles (12) or positioning piles (1); The bottoms of the extruded plate (2) and the curved plate (24) are both designed with chamfered angles, so that the extruded plate (2) and the curved plate (24) can be more easily inserted between the two sheet piles (14).
4. A hydraulic cofferdam construction device according to claim 3, characterized in that: The heights of the full-circle rod (23) and the semi-circle rod (22) are both higher than the heights of the positioning pile (1) and the fixing pile (12); The semicircular rod (22) and the full-circular rod (23) are both provided with a first through groove (25) on one side located above the positioning pile (1) and the fixing pile (12); a connecting rod (26) is inserted into the first through groove (25) of the semicircular rod (22) and the full-circular rod (23) located on the same side, so that the semicircular rod (22) and the full-circular rod (23) on the same side can be connected into a whole.
5. A hydraulic cofferdam construction device according to claim 4, characterized in that: Each of the positioning piles (1) is provided with a hydraulic cylinder (27); The extension rod of each hydraulic cylinder (27) extends to the top of the positioning pile (1) and is fixedly connected to an L-shaped block (28); each L-shaped block (28) is provided with a second through groove (29) on both side end surfaces facing the two connecting rods (26), and the second through groove (29) penetrates the L-shaped block (28); The connecting rods (26) close to the second through grooves (29) all extend into the second through grooves (29). Since the four connecting rods (26) are connected by four L-shaped blocks (28), the four connecting rods (26) can be formed into a whole. When the connecting rods (26) are inserted, the connecting rods (26) are first passed through the second through grooves (29) on the L-shaped blocks (28), and then passed through the first through grooves (25) in sequence, so that finally both sides of the connecting rods (26) are located in the second through grooves (29) of different L-shaped blocks (28).
6. A hydraulic cofferdam construction device according to claim 5, characterized in that: The surface of the fixed piles (12) on one side of the cofferdam structure is fixedly connected with a slide rail (3); The slide rails (3) are all slidably connected with sliders (31); the sliders (31) are all fixedly connected with L-shaped plates (32), and adjacent L-shaped plates (32) are fitted to each other.
7. A hydraulic cofferdam construction device according to claim 6, characterized in that: Baffles (33) are fixedly connected to both sides of the L-shaped plate (32).
8. A hydraulic cofferdam construction device according to claim 7, characterized in that: The sliding block (31) extends to the top position of the fixing pile (12).